Hello film guy,
Surge protection is crucial
One can use TPYE 2 single phase (1P+N) SPD's ( surge protection device) in branch circuits also and are much cost effective. One can buy a Havells type 2 SPD for Rs 2090/- + GST only.
For cost effective, readily available and somewhat cheaper to maintain solution, the below combinations are also good.
1) Low budget option: automatic or manual voltage stablizer + G. I Earthing, minimum 12 feet deep + SPD type 2 + 4 way or 6 way Single phase double door distribution box ( Double pole MCB optional) = Rs 7 to 8 thousand approx
2) Mid budget option: Servo or CVT stablizer + G. I / Copper Earthing, minimun 12 feet deep + SPD type 2 (optional in case of CVT) + 4 way or 6 way Single phase double door distribution box(optional in case of CVT) ( Double pole MCB optional) = Rs 18 to 20 thousand approximately
3) Premium option: Online UPS + copper Earthing, minimum 12 feet deep + SPD type 2 + 4 way or 6 way Single phase double door distribution box ( Double pole MCB optional) + Type 1, SPD, at the main distribution box, it will be single phase or three phase depending upon your house supply = Rs 30-35 thousand approximately.
All the above can be installed near the equipment rack/ switch box. Normally there is no need for a dedicated single phase power line if there are no major voltage drops and the house load is balanced across all phases. The surges and spikes arising from within the house is taken care of by surge protection device SPD type 2.
P. S : I Have three different setups at home, and i currently use all the above options and have a roughly 1.5kw load for each setup.
For earth there may be need to apply water to the earth pit in case of dry areas or low level of ground water etc, In that case a haudi may be needed which safeguard the wires as well as keeps the earth pit with enough moisture.